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能在时限内出来就可以了，TUD比赛的时候这个题限90秒

Posted by frkstyc at 2005-07-18 20:25:47 on Problem 2489
In Reply To:调过了样例就交了，看来算法对很重要，不过，我的巨慢无比 Posted by:patina at 2005-07-18 20:22:55

Followed by:

但是我很想知道别人怎么<1000ms的，:) (0) patina 2005-07-18 20:27:16
- 我也想知道 (0) c0500448242 2005-07-18 20:33:55
  - 呵呵，好好想想吧，想办法把O(nlogn)-O(nlogn)搞成O(nlogn)-O(n)就行了 (0) frkstyc 2005-07-18 20:42:41
    - 斜率相同的那些线段覆盖大概也许似乎的确可以做到O(n)??那就不能排序了....怎么搞呢？ (0) palmtenor 2005-07-18 20:47:05
      - 我说的同组统计的时间，分组还是要O(nlogn)的 (0) frkstyc 2005-07-18 20:48:11

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